Table Mountain

What the code says

The Grid Point Code for Table Mountain is #8K716-5HHPD. It names a cell 2.56 m north to south and 2.84 m east to west, centred on 33°57'43.81"S, 18°24'48.68"E, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

What it is

Mountain in Cape Town, South Africa

Code

#8K716-5HHPD

With a check character

#8K716-5HHPD*3

Short form

5HHPD

Cell centre

-33.962170, 18.413522

Cell size

2.56 m by 2.84 m

Region

Western Cape

Country

South Africa

How to give this address

On a sign, a form or a delivery note

The whole code, #8K716-5HHPD. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Western Cape

Table Mountain 5HHPD: a name both people know, then the last five characters. They give back the exact code for anywhere within 4.0 km north or south and 4.4 km east or west of Table Mountain. Further away the same five name somewhere else, which is why the whole code is what goes on a sign.

Copied by hand, or read over a phone

#8K716-5HHPD*3. The character on the end catches any single mistyped symbol and any two neighbours swapped.

As a link or a square code

Open it on the map, move to the exact door, and add directions if the code needs help: "blue gate, second floor". The link and the square code carry them. Nothing is kept on this site.

From the city to the door

The first four characters name a cell about 40 km by 44.3 km here. Each one after that picks one of 25 inside the last, so the whole ten name a spot about the size of a doorway.

1. 18K71Metropolitan area40 km by 44.3 km
2. 68K716District8 km by 8.86 km
3. 58K7165Suburb1.6 km by 1.77 km
4. H8K7165HA few streets320 m by 355 m
5. H8K7165HHBuilding64 m by 70.9 m
6. P8K7165HHPEntrance12.8 m by 14.2 m
7. D8K7165HHPDDoorway2.56 m by 2.84 m

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